Many Google teams have also been on a similar journey from Java to Kotlin for both Android and the server-side, culminating in over 11m lines of Kotlin code (as of October 2022).
"So we are excited to see Meta make the move to Kotlin and are glad they've had success. Google's Kotlin product manager James Ward welcomed Meta's move: "Android has been Kotlin-first for three years as it offers our best possible developer experience while building on top of and interoperating with Java and its ecosystem," he told ZDNET. Compared to Java, Google says that Kotlin is more efficient, produces safer code and a smaller codebase, and is 100% interoperable with the Java language – making the switch from Java codebases easier by allowing them to coexist. Google has over 70 Android apps built at least partly with Kotlin, including Maps, Home, Play, Drive, and Messages. In 2019, Google's Android team adopted the 'Kotlin-first' approach.
Google has been using Kotlin for Android apps since 2017 and the pair have jointly supported the Kotlin language through the Kotlin Foundation since 2018. Kotlin was first developed by JetBrains, the maker of developer tools or IDEs like IntelliJ. Meta's switch away from Java to Kotlin for Android app development is a milestone, given Meta's scale and the size of its apps. Java is one of the top three programming languages, thanks to its dominance in enterprise applications, while Kotlin is a less popular but still top 20 programming language. In total, our Android codebase has more than 10 millions lines of Kotlin code," noted Strulovich. "Today, our Android apps for Facebook, Messenger, and Instagram each have more than 1 million lines of Kotlin code, and the rate of conversion is increasing. The migration to Kotlin is underway, with Meta's Android app repositories already consisting of 10 million lines of Kotlin code. "Shifting away from Java, which we currently use for Android development, and over to Kotlin is not a trivial task," notes Omer Strulovich, a software engineer at Facebook.Īlso: Salary freezes and a return to the office? Not for software developers The 14 best web hosting services: Which is right for your website?
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